Number, NAPX-p169627v02

Question

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Worked Solution

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Variant 0

DifficultyLevel

551

Question

A box of fruit contains 12 apples, 16 oranges, and 13 pears.

About what percentage of the fruit in the box are apples?

Worked Solution
Percentage of apples = number of applestotal pieces of fruit\dfrac{\text{number of apples}}{\text{total pieces of fruit}}
= 1212+16+13\dfrac{12}{12 + 16 + 13}
= 0.292
≈\approx 29%

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
A box of fruit contains 12 apples, 16 oranges, and 13 pears. About what percentage of the fruit in the box are apples?
workedSolution
||| |-|-| |Percentage of apples|= $\dfrac{\text{number of apples}}{\text{total pieces of fruit}}$| ||| ||= $\dfrac{12}{12 + 16 + 13}$| ||= 0.292| || $\approx$ {{{correctAnswer}}}|
correctAnswer
29%

Answers

Is Correct?Answer
✓

29%

x

32%

x

37%

x

41%

Variant 1

DifficultyLevel

546

Question

In a classroom there are 24 boys and 36 girls.

What percentage of the students in the classroom are girls?

Worked Solution
Percentage of girls = number of girlstotal students\dfrac{\text{number of girls}}{\text{total students}}
= 3624+36\dfrac{36}{24 + 36}
= 0.6
= 60%

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
In a classroom there are 24 boys and 36 girls. What percentage of the students in the classroom are girls?
workedSolution
||| |-|-| |Percentage of girls|= $\dfrac{\text{number of girls}}{\text{total students}}$| ||| ||= $\dfrac{36}{24 + 36}$| ||= 0.6| ||= {{{correctAnswer}}}|
correctAnswer
60%

Answers

Is Correct?Answer
x

48%

x

57%

✓

60%

x

64%

Variant 2

DifficultyLevel

551

Question

At a dog show there are 15 labradors, 25 poodles and 20 malamutes.

About what percentage of the dogs at the show are poodles?

Worked Solution
Percentage of poodles = number of poodlestotal dogs\dfrac{\text{number of poodles}}{\text{total dogs}}
= 2515+25+20\dfrac{25}{15 + 25 + 20}
= 0.416...
≈\approx 42%

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
At a dog show there are 15 labradors, 25 poodles and 20 malamutes. About what percentage of the dogs at the show are poodles?
workedSolution
||| |-|-| |Percentage of poodles|= $\dfrac{\text{number of poodles}}{\text{total dogs}}$| ||| ||= $\dfrac{25}{15 + 25 + 20}$| ||= 0.416...| || $\approx$ {{{correctAnswer}}}|
correctAnswer
42%

Answers

Is Correct?Answer
x

71%

✓

42%

x

33%

x

25%

Variant 3

DifficultyLevel

554

Question

A bag contains 22 red marbles, 40 green marbles and 16 yellow marbles.

About what percentage of the marbles in the bag are yellow?

Worked Solution
Percentage of yellow marbles = number of yellowtotal marbles\dfrac{\text{number of yellow}}{\text{total marbles}}
= 1622+40+16\dfrac{16}{22 + 40 + 16}
= 0.205128...
≈\approx 21%

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
A bag contains 22 red marbles, 40 green marbles and 16 yellow marbles. About what percentage of the marbles in the bag are yellow?
workedSolution
||| |-|-| |Percentage of yellow marbles|= $\dfrac{\text{number of yellow}}{\text{total marbles}}$| ||| ||= $\dfrac{16}{22 + 40 + 16}$| ||= 0.205128...| || $\approx$ {{{correctAnswer}}}|
correctAnswer
21%

Answers

Is Correct?Answer
x

20%

✓

21%

x

28%

x

51%

Variant 4

DifficultyLevel

549

Question

A fishing boat returns with 16 flathead, 7 bream and 9 flounder.

About what percentage of the fish are bream?

Worked Solution
Percentage of bream = number of breamtotal fish\dfrac{\text{number of bream}}{\text{total fish}}
= 716+7+9\dfrac{7}{16 + 7 + 9}
= 0.21875
≈\approx 22%

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
A fishing boat returns with 16 flathead, 7 bream and 9 flounder. About what percentage of the fish are bream?
workedSolution
||| |-|-| |Percentage of bream|= $\dfrac{\text{number of bream}}{\text{total fish}}$| ||| ||= $\dfrac{7}{16 + 7 + 9}$| ||= 0.21875| || $\approx$ {{{correctAnswer}}}|
correctAnswer
22%

Answers

Is Correct?Answer
x

50%

x

28%

✓

22%

x

21%

Variant 5

DifficultyLevel

548

Question

A cafe receives a milkshake order for 2 chocolate, 4 strawberry, 4 caramel and 3 vanilla milkshakes.

About what percentage of the milkshakes are chocolate?

Worked Solution
Percentage of chocolate = number of chocolatetotal milkshakes\dfrac{\text{number of chocolate}}{\text{total milkshakes}}
= 22+4+4+3\dfrac{2}{2 + 4 + 4 + 3}
= 0.15384...
≈\approx 15%

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
A cafe receives a milkshake order for 2 chocolate, 4 strawberry, 4 caramel and 3 vanilla milkshakes. About what percentage of the milkshakes are chocolate?
workedSolution
||| |-|-| |Percentage of chocolate|= $\dfrac{\text{number of chocolate}}{\text{total milkshakes}}$| ||| ||= $\dfrac{2}{2 + 4 + 4 + 3}$| ||= 0.15384...| || $\approx$ {{{correctAnswer}}}|
correctAnswer
15%

Answers

Is Correct?Answer
✓

15%

x

16%

x

23%

x

31%

Tags

  • ms_ca